Pump-rod counterbalance.



No. 760,266. PATENTED MAY 17,1904.

R. B. SMITH.

'PUMP ROD GOUNTERBALANGE.

PPPP IQATION FILED FEB. 29. 1904.

N 0 M 0 D E L.

Patented May 1'7, 1904.

ROBERT E. SMITH,

OF TRAER, IOIVA.

PUMP-ROD COUNTERBALANCE.

SPECIFICATION forming part of Letters Patent No. 7 60,266, dated May 17,1904.

Application filed February 29, 1904;. Serial No. 195,719. (No model.)

To all whmn it may concern.-

Be it known that I, ROBERT B. SMITH, a citizen of the United States,residing at Traer, in the county of Tama and State of Iowa, haveinvented certain new and useful Improvements in Pump-RodCounterbalances, of which the following is a specification.

This invention relates to pumps operated by a windmill, and has for itsobject to provide a simple device for counterbalancing the weight of thepump-rod and its connections, so as the better to equalize the work ofthe windmill crank-wheel on the upstroke and downstroke and prevent themost of the jerking and pounding so common in the operation of pumpingapparatus.

The invention embodies certain improvements in apparatus patented toGilbert Mc- Turk and myself on the 12th day of January, 1904, underLetters Patent No. 7 49,236.

The more particular object sought to be attained in this invention is toprovide for a connection of the counterbalance-lever near the upper endof the pump-rod, inasmuch as many of them are quite slender andflexible, and as some pressure is brought to bear on them endwise on thedownstroke there would be a tendency on their part to bend if. the leverwere to be attached near the pump.

The nature of the invention will more fully and clearly appear byreference to the accom panying drawings and as set forth in thedescription and claims following.

In the drawings forming a part of this specification, Figure 1 is a viewof a pumping-rig without the windmill and illustrates the application ofthe device embodying this invention. Fig. 2 shows details of thecounterbalancelever and some of its connections.

A designates a windmill-tower of a familiartype, B the pump, and C thepump-rod, which is of course supposed to connect with the crank of awindmill. (Not shown.) To the pump-rod is pivotally connected one end ofa lever D. The connection might be direct, as by passing the pin Ethrough the end of the lever and a hole in the pump-rod; but as it wouldbe inconvenient to drill such hole in pump-rods now in use it ispreferred to use a clip F, straddling the pump-rod and secured tightlythereto by a bolt G. This clip also straddles the end of the lever D andconnects therewith by the pin E, as shown. The lever is pivoted by afulcrum-pin I in a stirrup J, suitably connected to thesupporting-frame, as by a hook K, attached to the stirrup. The outer endof the lever forms ahook M, and to this is attached a strong spring N.To the outer end of the spring connects a chain O, by means of which anadjustable connection (to secure the proper tension) is made with a hookI, here shown as a double hook, one end engaging a link in the chain andthe other hooked to some part of the tower-a cross-brace H, for example.

By this construction and arrangement that part of the pump-rod below thelever has no resistance, except the friction of the pump, to overcome onthe downstroke, and there is no danger of bending the rod. At the sametime the mechanism which operates the pump is relieved of much of theweight or all the weight of the pump-rod and its connections, and thepractical effect is to ease the operation greatly, make the apparatusrun more smoothly, and save wear and tear.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. The combination with a pump-rod and supporting-frame, substantiallyas described, of a lever having a pivotal connection with said rod, afulcrum-stirrup therefor, suspending the lever from some suitable partof the supporting-franie, a spring attached to the outer end of saidlever, and an adjustable connection thereof with the tower below,substantially as described.

2. The combination with a pump-rod and tower, of a lever, a fulcrumsuspended from some portion of the tower, a clip secured to the pump-rodand pivotally connecting with one end of said lever, a spring attachedto the other end of the lever, and an adjustable connection thereof withthe tower.

3. The combination with a pump-rod and tower, substantially asspecified, of a clip secured to the rod, a lever pivoted to said clip, afulcrum-stirrup suitably suspended from the tower-frame by a hookengaging the stirrup, a suspending-hook, a spring attached to the outerend of the lever, a chain depending IO therefrom, and a hook to connectthe chain with a lower part of the tower.

In testimony whereof Iafiix my signature in presence of two witnesses.

ROBERT B. SMITH.

WVitnesses: v

HENRY OTT, HENRY M. WooLLEY.

